Weak.
If Mike Tyson was a rapist then rest assured there would be a fucking line-up of women nailing him to the wall, and rest assured the charges would stick- because Mike Tyson.
Mike Tyson was convicted of rape once and served the time, but I do not think that makes him a rapist.
From my understanding of the totality of the circumstances (as far as I know from what is in the public domain), the lady went to his unit for some loving but did not sign up for Mike Tyson loving (aggressive sex with possible biting). Mike did not prey on her with the intention to have sex without her consent. Mike Tyson had sex with her as he only knew how, and she was not a fan. That satisfies the definition of non-consensual sex and I think he was rightly convicted thereof. But Mike Tyson is not a predator courting young girls to fuck without their consent. He's just savage Mike Tyson. I highly recommend you watch his documentary Tyson. In it he describes his appreciation for "strong" women, how he likes a woman who is going to basically fight him. More importantly, his description of sexuality sounds very aggressive. I could easily see how someone who is inexperienced with him could find themselves in an encounter that is not inline with their expectations. That is why, to this day, Tyson denies raping her. In his mind, she came over for sex and they had sex. In her mind, she was likely looking for passionate sex, and not rough fucking from Tyson.